Regenerative natural-gas furnace



(No Model.) 2 Sheets-Sheet 2.

W. SWINDELL.

'REGENERATIVE NATURAL GAS FURNAGE.

No. 322,994. Patented July 28, 1885..

WWW

III-

Witnesss. Inventor.

Mazzm N PETERS, PhotrrLRhagr-mpher, Walhingtcl o :1

UNITED TATES.

FFlCE.

WILLIAM swINDELL, or ALLEGHENY, PENNSYLVANIA.

REGENERATIVE NATURAL-GAS FURNACE.

SPECIFIQATION forming part of Letters Patent No. 322,994, dated July 28,1885.

Application tiled Mai 4, 1885. (No model.)

T 0 all whom it may concern.-

Be it known that 1, WILLIAM SWINDELL, of Allegheny City, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Regenerative N atural-Gas Furnaces; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention consists of an improved construction of furnace for burning natural gas; and its characteristics consist of a checkerwork arranged in the fire-chamber at a point between the natural gas fiue and the firebridge, and also in the form of checker-work used.

To enable others skilled in the art to make and use my invention, I will now describe it by reference to the accompanying drawings, in which- Figure 1 is a vertical longitudinal section of a puddling furnace provided with my improvement on the line A A of Fig. 3. Fig.2 is a horizontal section on the line B B of Fig. 1. Fig. 3 is a vertical cross-section on the line 0 O of Fig. 1. Fig. 4 is a vertical longitudinal section of a boiler-furnace on the line D D of Fig. 6. Fig. 5 is a horizontal section on the line E E of Fig. 4. Fig. 6 is a vertical cross-section on the line F F of Fig. 4.

Like letters of reference indicate like parts.

Referring now to Sheet 1 of the drawings, 1 indicates the lirechamber, which is provided with a bottom plate, 2, supported on bars or girders 3. Resting on the bottom plate is a series of tubular bricks, 4, three of which are shown in the drawings. These bricks have a central opening, 5, and constitute the piers upon which the checker-work is supported.

Between each row of bricks 4are horizontal fiues 6, which extend back to the cross-fines 7, into which the holes 5 also open.

Extending between the holes 5 and the lines 6 are series of small openings or ports 8.

Supported on a suitable fioor, 9, on the pierbricks 4 is a checker-work composed of longitudinal rows of bricks 10 and lateral rows 11, having open channels 12 between them, so that the air entering through the fiues 5 and 6 may pass from the flue 7 up through the interstices of the checkerwork and out through a front vertical flue, 14, in which the gas pipe or flue 15 is placed. The lateral fiues 12 of the checker-work are closed at both ends,while the longitudinal fines are closed at the back end by the bridge-wall 16 and open at the front end into the vertical fiue 14. The top of the checker-work is closed by a brick partition, 17. The gas-pipe 18 enters the gas-flue 15 at any desired point. The gas-flue 15 is composed of brick-sections similar to those of the piers 4, having lateral openings 8, extending from the due out into the chamber 14.

The operation of my improved furnace is as follows: The gas is supplied by the pipe 18 into the gasfiue 15, which extends across the Vertical chamber 14, and is discharged into the latter through the ports or openings 19. The air enters through the openings 20,passes through the horizontal flues 5 and 6 to the lateral distributing-flue 7, from which it passes up into and through the fiues 12 and 13 of the checker-work. From the checker work it passes out into the chamber 14 through the longitudinal fines 13, where it meets the gas, and, uniting therewith, causes a vivid combustion in front of and over the top of the checker-work and bridge-wall, whence it passes into the bed 21.

The boiler-furnaceshown on Sheet 2 is similarly. constructed, and does not need particular description.

My improved furnace is not only particularly adapted to the burning of natural gas, but the checker work arrangement can be easily applied to existing furnaces. It is simple in construction and very effective in operation. After the furnace has been lighted for a short time the checker-work becomes very highly heated and heats the incoming air to a very high degree, so as to bring it into contact with the gas in the desired condition.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. A regenerative gas-furnace provided with a series of horizontal air ilues extending through the lowerpart of the fire-chamber and opening into a checker-work having a closed top and longitudinal and lateral passages, in combination with a vertical gas-flue provided with a gassupply pipe, into which gas-flue the longitudinal air-fines open at difi'erent levels, chamber, substantially as and for the pursubstantially as and for the purposes described. poses described. IO

2. A furnace having a checker-Work pro- In testimony whereof I have hereunto set my vided with longitudinal and lateral flues arhand this 30th day of April, A. D. 1885. 5 ranged next to the bridgewall with a Vertical WILLIAM SWIN DELL.

combustion-flue in front of the checker-work Witnesses: 4 into which the air from the latter passes, and W. B. CORWIN, a gas-pipe extending across said combustion- THOMAS W. BAKEWELL.

l an-W f 

